139 lines
2.7 KiB
C
139 lines
2.7 KiB
C
/*
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* Copyright (C) 2002 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#if !defined __REGS_H
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#define __REGS_H
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#include <mem.h>
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struct Flag_Info {
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union {
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Bit8u b;
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Bit16u w;
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Bit32u d;
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} var1,var2,result;
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Bitu type;
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Bitu prev_type;
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bool cf,sf,pf,af,zf,of,df,tf,intf;
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bool nt;
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Bit8u io;
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bool oldcf;
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};
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struct FPU_Flag_Info {
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struct {
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Real64 r;
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Bit8u tag;
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} var1,var2, result;
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struct {
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bool bf,c3,c2,c1,c0,ir,sf,pf,uf,of,zf,df,in;
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Bit8s tos;
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} sw;
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struct {
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bool ic,ie,sf,pf,uf,of,zf,df,in;
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Bit8u rc,pc;
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} cw;
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Bitu type;
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Bitu prev_type;
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};
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struct Segment {
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Bit16u value;
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bool special; /* Signal for pointing to special memory */
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HostPt host; /* The address of start in host memory */
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PhysPt phys; /* The phyiscal address start in emulated machine */
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};
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enum { cs=0,ds,es,fs,gs,ss};
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extern Segment Segs[6];
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extern Flag_Info flags;
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extern FPU_Flag_Info fpu_flags;
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//extern Regs regs;
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void SetSegment_16(Bit32u seg,Bit16u val);
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struct CPU_Regs {
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union {
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Bit32u d;
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Bit16u w;
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struct {
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Bit8u l,h;
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}b;
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} ax,bx,cx,dx,si,di,sp,bp,ip;
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};
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struct FPU_Regs {
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struct {
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Real64 r;
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Bit8u tag;
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} st[8];
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};
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extern CPU_Regs cpu_regs;
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#define reg_al cpu_regs.ax.b.l
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//extern Bit8u & reg_al=cpu_regs.ax.b.l;
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#define reg_ah cpu_regs.ax.b.h
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#define reg_ax cpu_regs.ax.w
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#define reg_eax cpu_regs.ax.d
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#define reg_bl cpu_regs.bx.b.l
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#define reg_bh cpu_regs.bx.b.h
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#define reg_bx cpu_regs.bx.w
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#define reg_ebx cpu_regs.bx.d
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#define reg_cl cpu_regs.cx.b.l
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#define reg_ch cpu_regs.cx.b.h
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#define reg_cx cpu_regs.cx.w
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#define reg_ecx cpu_regs.cx.d
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#define reg_dl cpu_regs.dx.b.l
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#define reg_dh cpu_regs.dx.b.h
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#define reg_dx cpu_regs.dx.w
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#define reg_edx cpu_regs.dx.d
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#define reg_si cpu_regs.si.w
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#define reg_esi cpu_regs.si.d
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#define reg_di cpu_regs.di.w
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#define reg_edi cpu_regs.di.d
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#define reg_sp cpu_regs.sp.w
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#define reg_esp cpu_regs.sp.d
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#define reg_bp cpu_regs.bp.w
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#define reg_ebp cpu_regs.bp.d
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#define reg_ip cpu_regs.ip.w
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#define reg_eip cpu_regs.ip.d
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#endif
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